Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jonathan Morris Siden, MD

Obstetrics & Gynecology Physician in Flushing, NY · enumerated 2020.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1093340168

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Registry record

Entity type Individual (Type 1)

Name Jonathan Morris Siden

Credential MD

Sex Male

Practice address 5645 Main St, Flushing, NY, 11355

Phone (718) 670-2000

Enumeration date Mar 9, 2020

Last updated in NPPES Oct 12, 2026

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 292986 (MA) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 344134 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Jonathan Siden?

The National Provider Identifier (NPI) for Jonathan Siden is 1093340168, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jonathan Siden practice?

The practice location on file with NPPES is in Flushing, NY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-10-12.